Board-dat/MSP/MSP1064-dat/MSP1064-dat.md
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+
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+# MSP1064-dat
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+
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+Schematic please see here.
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+https://www.electrodragon.com/w/IIC
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+
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+
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+## demo code
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+
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+- https://github.com/Edragon/Arduino/tree/master/Sketchbook/11-Interface/PCF
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+
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+
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+## ref
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+
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+- [[GPIO-dat]]
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+
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+- [[PCF8574-dat]]
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Board-dat/MSP/MSP1069-dat/MSP1069-dat.md
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+
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+# MSP1069-dat
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+
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+
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+## ref
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+
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+- [[IO-expander]]
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+
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+- [[MCP23017-dat]]
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+
Board-dat/MSP/MSP1072-dat/MSP1072-dat.md
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@@ -13,4 +13,7 @@
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- [[CH423-dat]] - [[WCH-dat]]
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+- [[GPIO-dat]]
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+
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+
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- [[MSP1072]]
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Tech-dat/GPIO-dat/GPIO-dat.md
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@@ -10,7 +10,12 @@ GPIOS (Giant Pixel Interleaved Octal Shifts) is a method used in data storage an
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4. POI (Pull-Up Resistor In): In this mode, the cable noise can be filtered out by the internal pull-up resistors while the device is running.
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5. POPI (Pull-Up Resistor/Pull-Down Input): It's a versatile option that provides isolation for both inputs and outputs
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-d
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+## IO expander
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+
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+- [[MSP1072-dat]] - [[MSP1064-dat]] - [[MSP1069-dat]]
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+
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+
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+
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## ref
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service-dat/refund-dat/refund-dat.md
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+# refund-dat
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+
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+
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+## credit card refund
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+
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+According to payment system "stripe":
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+ Refunds take 5-10 days to appear on a customer's statement. Stripe's fees for the original payment won't be returned, but there are no additional fees for the refund.
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+
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+## Paypal refund
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+
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+- should be instantly
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